"A Red, White and Blue Holiday?" Which would that be?
"Ooh! It's like Independence Day in December!!!!"
Would it REALLY kill you just to say 'Merry Christmas and a Happy Hanukkah?"
"Have a happy HOLIDAY?" What if I celebrate more than one? Do I only get to be happy on Christmas? Do I have to sulk all day on the Feast of the Holy Family?????
If you try too hard not to favor any group over another, you just end up sounding stupid.